Apparatus for producing rubber bulbs for atomizers, syringes, &amp;c.



J. A. MURRI Y'.

APPARATUS FOB. IIIOUUCING RUBBER Bull is You IITOMIZILIIS, SYRINGES, am.

I APPLICATION FILED JAN. III` 1011.

l 0463372 .Imm-,ea 0015.8, 1910.

U TED STATES PATENT OFFICE.

JAMES A. MURRAY, OF NEW nHAVEN, CONNECTICUT, ASSIGNOR OF ONE-HALF '10 JEREMIAH L. MAHQNEY, OF NEW HAVEN, CONNECTICUT.

APPARATUS FOB ERODUCING RUBBER To all whom it may concern:

Be it known that I, JAMES A. MURRAY, a citizen of the.United States, residing at New Haven, inthe county of New Haven and State of Connecticut, have invented a new and useful Im rovement in Apparatus for Producing Rubber Bulbs for Atomizers, Syringes, Src.; and I do hereby declare the following, when taken in connection with the accompanying drawings and t-he letters of reference marked thereon, to be a full, clear,v and exact description otl the same, and which said drawings constitute part of this specification, and represent, in-

Figure 1 a side view of a rubber bulb for atomizers, syringes2 etc., constructed in accordance with my invention. Fig. 2 a sectional view showing the dies for producing the same and illustrating the dies in an open position preparatory to forming the bulb. Fig, 3 a sectional view of the dies in the closed position showing the completed bulb therein.

This invention relates to an improvement in apparatus for producing rubber bulbs for atomizers syringes, etc. As usually constructed these bulbs are formed in two pieces which are united on a longitudinal line, but ditiiculty is experienced in luniting the edges of the parts so that they will not separate.

The object of this invention is to mold the bulb upon a core so that it is produced without a seam; aiid the invention consists in the method and apparatus hereinafter described and particularly recited in the claim.

In carrying out my invention I employ a male die 2 having a cavity 3 corresponding toI one-half of a completed bulb 4, and a female die 5 having a cavity 6 corresponding to the other half of the bulb, assuming that the bulb is divided transversely. In connection with these dies I employ a core 7 corresponding to the internal dimensions of the bulb, and with a stem 8 at one end and a stem 9 at the other end corresponding in Specicationof Letters Patent.

Application tiled January 18, 1911. Serial No. 603,298.

BULBS Foa A'roMIzERs, sYRINGEs, sw.'

Patented Oct 8, 1912.

diameter to the internal diameter of the openings formed in the ends of the bulb. Over the stem 8 I place a disk 10 of rubber, and over the stem 9 a c0rresponding disk 11 of rubber, the disks 10 and 11 containing a sutiicient amount of rubber to form a complete bulb. The dies are then brought together and the rubber is squeezed around the bulb and their edges firmly united as shown in Fig. 3 of the drawings, so that a bulb is formed of a single piece and the abutting edges are so united as to ber is' still warm or green the bulb is stripped from the core and the rubber will yield sufficiently to .allow the core to be withdrawn through one end of the bulb. The bulbs are then trimmed in the usual manner adapting them to be coupled with tubing. By this method of formln bulbs,

fore stated the stock uniting at the center point where the stock is thickest.

The herein described apparatus for forming rubber bulbs consisting of a male die and a female die having recesses each carresponding to half of a bulb divided transl versely, combined with a core corresponding ing witnesses.

JAMES A. MURRAY.

Witnesses FREDERIC C. EARLE, CLARA L. Wenn.

form an integral structure. While the rub-- a longitudinal seam is avoided, an -as bef` forms a perfect -joint or weld and attbia-` specication in the presence of two subscrib- 

